Hinge.



M. GUETT.

muse.

APPLICATION FILED JAN. 5 1917- 1,251,?73. Patented Jan. 1, 1918.

F '5 Fig. 2'.

I H van far A f fU'rrfEg spective pivot pins 7 and 8. The several grooves are coaxial, the inner end of the grooves 7 being opposite the outer end of the groove 11 and the inner end of the groove 10 being opposite the outer end of the groove 12; the two pivot pins 7 and 8, therefore, are coaxial.

I hold the two pivot pins 7 and 8 in place by staking the stock of the face plate and door respectively thereover. It is old to pivotally connect a door with a support by pivot pins set in alined grooves in the two parts and to maintain the pins in proper relation with the support and door by staking the stock ofsaid parts over the pins. Where in the old construction this is used in a face plate and a door employed in the manner already set forth, the face plate and door are of comparatively thick stock and the stock of these two parts is turned over the pivots by staking, the stock thus staked out,.however, being cut at right angles to 'the parts which is feasible owing to the thickness to which I have referred. I am enabled to use an exceedingly thinner face plate and door of sheet metal and yet can hold the pivot pins in position by staking without appreciably sacrificing strength.

' I have already referred to the fact that there is an important advantage in leaving the stock between the grooves 11 and 12 uncut While according to one phase of the invention the door might be grooved all the way across, still there is a decided advantage in making two grooves and provision fora reinforcing neck as it were between them. Another equally important feature of the invention is the way in which I stake the pivots in place as will hereinafter more particularly appear.

I desire to call attention to the fact that the several grooves are of such depth that the outer portions of the two pivot pins are virtually flush with the corresponding surfaces, which are the back in the present case, of the face plate and door respectively as illustrated in both Figs. 4 and 5. The material between the pins and the front of the face plate and door is as a consequence quite thin, as indicated in'both said Figs. 4 and 5 but the staking is done in such way that although the material at the points indicated be quite thin, the strength of the finished structure is practically in no Wise affected. v The face plate 2 on its rear is staked out as at 13 and 14, and 15 and 16 respectively to engage the respective pivot pins 9 and 10, these staked over parts 13, 14, 15 and 16 in the construction shown solidly embracing the pivots near their outer ends. The door is staked out as at 17 and 18, and 19 and 20, the staked out portions of the door overlying the pins near theirinner ends but not necessarily, however, closely hugging the pivots. The construction in question mi ht-be reversed, although by providing that set forth the swing of the door on the pivots or pins 7 and 8 is possible. The only difference, therefore, in the construction shown between the stakings of the face plate and those of the door is that the former closely embraces the pivots or pins, while the latter do not which is a ,way. of obtaining the necessary swinging motion of the door. Obviously, therefore, the pivots do not turn with respect to the face plate 2 or analogous members In the old, staked out construction to whichI have hereinbefore referred, the staking was done at right angles to the door and its support at the pin or pivot receiving grooves. This isfeasible where the parts in question are of a certain thickness, but where as in the present case they are quite thin, this-is practically, and I might correctly say,actually impossible from a manufacturing standpoint. In the two sectional views at and 5 the advantage of the new construction is brought out forcefully. In these two figures the staked out portions 15 and 16 and 19 and 20 respectively appear, but they are from the side walls of the respective grooves,

the staking cuts being made at acute angles rather than at right. angles to-the rear face of the face plate and door respectively, the staked over parts being not at right angles to'but at acute angles to the rear or other surfaces of the face plate and door respectively. It might in fact be proper to say that the several staked out'lugs of which in the present case there are four pairs, are transverse to the respective grooves, although not necessarily atright angles thereto. 7 Y

It is desirable to call attention to some of the striking differences between the present construction and what I have conceded to be old. In the old construction it is true that the stock of both the door and its support are staked over the pivot pins, but the staking cuts'are made in a direction at right angles to both the door and the face plate.

the staked over parts are inside of said faces. In staking out opposite lugs the tools which perform the necessary action approach on converging angles which as will be understood, are acute to the rear surface of the plate and door. I have already called attention to the fact that the outer sides of the pivots or pins are ractically flush with the corresponding sur aces of the door and face plate, and in this respect I differ from the old construction, because the outer surfaces of the pins or pivots therein are below the corresponding surfaces of the door and plate and the staked out lugs are also below said surfaces.

It will be evident that the door and the support hereinbefore described are grooved in corresponding faces and that the grooves are in alinement and their ends open. A pivot pin is set in the respective grooves, the skin portion of both the door and the support being cut therefrom at a point removed from the respective grooves, and said skin portion being bent over the pin on both the door and the support. The cuts are at opposite sides of the respective grooves and are on converging angles acute to the back faces of the door and the support. By reason of this construction I can utilize very thin stock for the formation of both the door and the support, thinner in fact than is now so far as I am aware possible. This is a consideration of the utmost importance, especially where the parts are made from sheet brass or similar material which is relatively speaking comparatively expensive.

What I claim is:

The combination of a door and its support, both of which are made from sheet metal, the support having an opening, the door fitting in the opening and when closed having its front face in the plane of the front face of the support, the door having distinct grooves and the support also having grooves at opposite sides of the opening, the several grooves being in alinement transversely of the support and their outer ends being open, the inner ends of the grooves in the door being closed and spaced from each other, the grooves being arranged respectively in pairs, and the open ends of the grooves of the respective pairs being in register, and pivot pins set in the grooves of the doors and the support respectively, the skin portion of both the door and the support being out therefrom at points removed from the respective grooves, the skinning cuts being on forwardly converging angles which are acute to the rear face of the door and the support, and the skin portions being MONROE GUETT. Witnesses L. L. MARKEL, HEATH SUTHERLAND.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

